Thanks to all for the great info. I contacted Dave at No Excuses and recieved some info. Only the 460 is legal in colorodo and he said that several of his clients shoot omegas with 70-85 grains of 777 for best results. So that will be my starting point, then I will try the rest. Should be a great spring of testing bullets and powder. I will keep you all posted on my findings. This will be a group project because the hunting partners that will be joining me all shoot Omegas and love to burn powder.